Abstract

Sphingosine kinase (SK) catalyses the phosphorylation of sphingosine to produce sphingosine 1-phosphate (S1P). S1P is a bioactive lipid that regulates cell proliferation, survival, migration etc. Extracellular S1P mediates its effects by binding to a family of five closely related G protein coupled receptors, S1P1-5. In addition, intracellular S1P may bind to undefined intracellular targets to elicit cellular responses. The focus of our recent work has